Enter the degrees of turn of the steering wheel and the degrees of turn of the wheel into the Steering Ratio Calculator. The calculator will evaluate and display the Steering Ratio. 

Steering Ratio Formula

The following formula is used to calculate the Steering Ratio. 

SR = SW / W
  • Where SR is the Steering Ratio (steering:wheel)
  • SW is the degrees of turn of the steering wheel 
  • S is the degrees of turn of the wheel 

To calculate a steering ratio, divide the degrees of turn of the steering wheel, by the degrees of turn of the road wheel.

How to Calculate Steering Ratio?

The following example problems outline how to calculate Steering Ratio.

Example Problem #1:

  1. First, determine the degrees of turn of the steering wheel. 
    • The degrees of turn of the steering wheel is given as: 30.
  2. Next, determine the degrees of turn of the wheel. 
    • The degrees of turn of the wheel is provided as: 60.
  3. Finally, calculate the Steering Ratio using the equation above: 

SR = SW / W

The values given above are inserted into the equation below and the solution is calculated:

SR = 30 / 60 = 1:2 (steering:wheel)

Example Problem #2: 

For this problem, the variables required are provided below:

degrees of turn of the steering wheel = 10

degrees of turn of the wheel = 25

Test your knowledge using the equation and check your answer with the calculator above.

SR = SW / W = ?